*{
	padding: 0;
	margin: 0;
}
body{
	
	
	background: url(../img/tg-img.jpg) no-repeat;
	background-size: 2000px 1000px;
}
/*头部*/
header{
	width: 980px;
	height: 200px;
	margin: 0 auto;
	position: relative;
	border: 3px solid yellow;
}
header h1{
	font-size: 20px;
	position: absolute;
	top: 20px;
}
header h2{
	font-size: 14px;
	position: absolute;
	top: 60px;
	
}
.search{
	position: absolute;bottom: 0;right: 0;
}
nav{
	position: absolute;
	top: 110px;
}
nav li{
	float: left;
	background: url(../img/tg-img.jpg) repeat-x;
}
nav li a{
	color: white;
	text-decoration: none;
}
